trend. >> these are depending upon us at this point. they don't do very well in the wild. whenever when people get involved with bee keeping, they help sustain the population. >> reporter: set up high ton the roof of westin hotel. >> a decline, i felt that, you know, family and friends in the area that are farmers and you need more bees because the more bees you have the more produce you produce. >> it will be another season before they show the honey, for now, it's all hiving and thriving. >> i figure at peak within the next month or so, there are going to be 20 to 30,000 flying through there. >> reporter: thousands of bees can probably buzz among the neighbors, but experts say it's safe. >> they've been domesticated for thousands of years. >> reporter: new york, chicago, and san francisco are among other cities that allow bee keeping, in four seasons, no complaints.